This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 13 |
| 3 | 15 |
| 4 | 19 |
| 5 | 25 |
| 6 | 133 |
| 7 | 135 |
| 8 | 199 |
| 9 | 223 |
| 10 | 297 |
| 11 | 299 |
| 12 | 511 |
| 13 | 15263 |
| 14 | 16491 |
| 15 | 18967 |
| 16 | 32455 |